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Extract looping logic used to find most recent svn timestamp (see #79)

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Steve Purcell 2012-04-20 16:48:30 +01:00
parent 142e1a2506
commit 6e25a6da87
1 changed files with 28 additions and 13 deletions
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41
package-build.el
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@ -71,13 +71,34 @@
;;; Internal functions
(defun pb/find-parse-time (regex &optional bound)
"Find REGEX in current buffer and format as a proper time version."
(defun pb/parse-time (str)
"Parse STR as a time, and format as a YYYYMMDD string."
(format-time-string
"%Y%m%d"
(date-to-time
(print (progn (re-search-backward regex bound)
(match-string-no-properties 1))))))
(print (substring-no-properties str)))))
(defun pb/string-match-all (regex str &optional group)
"Find every match for `REGEX' within `STR', returning the full match string or group `GROUP'."
(let (result
(pos 0)
(group (or group 0)))
(while (string-match regex str pos)
(push (match-string group str) result)
(setq pos (match-end group)))
result))
(defun pb/find-parse-time (regex &optional bound)
"Find REGEX in current buffer and format as a proper time version, optionally looking only as far as BOUND."
(pb/parse-time (progn (re-search-backward regex bound)
(match-string-no-properties 1))))
(defun pb/find-parse-time-latest (regex &optional bound)
"Find the latest timestamp matching REGEX, optionally looking only as far as BOUND."
(let* ((text (buffer-substring-no-properties
(or bound (point-min)) (point)))
(times (mapcar 'pb/parse-time (pb/string-match-all regex text 1))))
(car (nreverse (sort times 'string<)))))
(defun pb/run-process (dir prog &rest args)
"In DIR (or `default-directory' if unset) run command PROG with ARGS.
@ -188,8 +209,7 @@ seconds; the server cuts off after 10 requests in 20 seconds.")
"Check package NAME with config CONFIG out of svn into DIR."
(with-current-buffer (get-buffer-create "*package-build-checkout*")
(let ((repo (pb/trim (plist-get config :url) ?/))
(bound (goto-char (point-max)))
timestamps ts)
(bound (goto-char (point-max))))
(cond
((and (file-exists-p (expand-file-name ".svn" dir))
(string-equal (pb/svn-repo dir) repo))
@ -201,13 +221,8 @@ seconds; the server cuts off after 10 requests in 20 seconds.")
(print "cloning repository")
(pb/run-process nil "svn" "checkout" repo dir)))
(apply 'pb/run-process dir "svn" "info" (pb/expand-file-list dir config))
(while (setq ts (ignore-errors
(pb/find-parse-time
"Last Changed Date: \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\)" bound)))
(add-to-list 'timestamps ts))
(unless timestamps
(error "No valid timestamps found!"))
(car (reverse (sort timestamps 'string<))))))
(or (pb/find-parse-time-latest "Last Changed Date: \\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [0-9]\\{2\\}:[0-9]\\{2\\}:[0-9]\\{2\\}\\)" bound)
(error "No valid timestamps found!")))))
(defun pb/git-repo (dir)
"Get the current git repo for DIR."